COIN-OR::LEMON - Graph Library

source: lemon-1.2/lemon/error.h @ 459:ed54c0d13df0

Last change on this file since 459:ed54c0d13df0 was 440:88ed40ad0d4f, checked in by Alpar Juttner <alpar@…>, 11 years ago

Happy New Year again

  • update the copyright headers + run the source unifier
File size: 6.7 KB
Line 
1/* -*- mode: C++; indent-tabs-mode: nil; -*-
2 *
3 * This file is a part of LEMON, a generic C++ optimization library.
4 *
5 * Copyright (C) 2003-2009
6 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
7 * (Egervary Research Group on Combinatorial Optimization, EGRES).
8 *
9 * Permission to use, modify and distribute this software is granted
10 * provided that this copyright notice appears in all copies. For
11 * precise terms see the accompanying LICENSE file.
12 *
13 * This software is provided "AS IS" with no warranty of any kind,
14 * express or implied, and with no claim as to its suitability for any
15 * purpose.
16 *
17 */
18
19#ifndef LEMON_ERROR_H
20#define LEMON_ERROR_H
21
22/// \ingroup exceptions
23/// \file
24/// \brief Basic exception classes and error handling.
25
26#include <exception>
27#include <string>
28#include <sstream>
29#include <iostream>
30#include <cstdlib>
31#include <memory>
32
33namespace lemon {
34
35  /// \addtogroup exceptions
36  /// @{
37
38  /// \brief Generic exception class.
39  ///
40  /// Base class for exceptions used in LEMON.
41  ///
42  class Exception : public std::exception {
43  public:
44    ///Constructor
45    Exception() throw() {}
46    ///Virtual destructor
47    virtual ~Exception() throw() {}
48    ///A short description of the exception
49    virtual const char* what() const throw() {
50      return "lemon::Exception";
51    }
52  };
53
54  /// \brief Input-Output error
55  ///
56  /// This exception is thrown when a file operation cannot be
57  /// succeeded.
58  class IoError : public Exception {
59  protected:
60    std::string _message;
61    std::string _file;
62
63    mutable std::string _what;
64  public:
65
66    /// Copy constructor
67    IoError(const IoError &error) throw() : Exception() {
68      message(error._message);
69      file(error._file);
70    }
71
72    /// Constructor
73    explicit IoError(const char *message) throw() {
74      IoError::message(message);
75    }
76
77    /// Constructor
78    explicit IoError(const std::string &message) throw() {
79      IoError::message(message);
80    }
81
82    /// Constructor
83    explicit IoError(const char *message,
84                     const std::string &file) throw() {
85      IoError::message(message);
86      IoError::file(file);
87    }
88
89    /// Constructor
90    explicit IoError(const std::string &message,
91                     const std::string &file) throw() {
92      IoError::message(message);
93      IoError::file(file);
94    }
95
96    /// Virtual destructor
97    virtual ~IoError() throw() {}
98
99    /// Set the error message
100    void message(const char *message) throw() {
101      try {
102        _message = message;
103      } catch (...) {}
104    }
105
106    /// Set the error message
107    void message(const std::string& message) throw() {
108      try {
109        _message = message;
110      } catch (...) {}
111    }
112
113    /// Set the file name
114    void file(const std::string &file) throw() {
115      try {
116        _file = file;
117      } catch (...) {}
118    }
119
120    /// Returns the error message
121    const std::string& message() const throw() {
122      return _message;
123    }
124
125    /// \brief Returns the filename
126    ///
127    /// Returns the filename or an empty string if it was not specified.
128    const std::string& file() const throw() {
129      return _file;
130    }
131
132    /// \brief Returns a short error message
133    ///
134    /// Returns a short error message which contains the message and the
135    /// file name.
136    virtual const char* what() const throw() {
137      try {
138        _what.clear();
139        std::ostringstream oss;
140        oss << "lemon:IoError" << ": ";
141        oss << _message;
142        if (!_file.empty()) {
143          oss << " ('" << _file << "')";
144        }
145        _what = oss.str();
146      }
147      catch (...) {}
148      if (!_what.empty()) return _what.c_str();
149      else return "lemon:IoError";
150    }
151
152  };
153
154  /// \brief Format error
155  ///
156  /// This exception is thrown when an input file has wrong
157  /// format or a data representation is not legal.
158  class FormatError : public Exception {
159  protected:
160    std::string _message;
161    std::string _file;
162    int _line;
163
164    mutable std::string _what;
165  public:
166
167    /// Copy constructor
168    FormatError(const FormatError &error) throw() : Exception() {
169      message(error._message);
170      file(error._file);
171      line(error._line);
172    }
173
174    /// Constructor
175    explicit FormatError(const char *message) throw() {
176      FormatError::message(message);
177      _line = 0;
178    }
179
180    /// Constructor
181    explicit FormatError(const std::string &message) throw() {
182      FormatError::message(message);
183      _line = 0;
184    }
185
186    /// Constructor
187    explicit FormatError(const char *message,
188                         const std::string &file, int line = 0) throw() {
189      FormatError::message(message);
190      FormatError::file(file);
191      FormatError::line(line);
192    }
193
194    /// Constructor
195    explicit FormatError(const std::string &message,
196                         const std::string &file, int line = 0) throw() {
197      FormatError::message(message);
198      FormatError::file(file);
199      FormatError::line(line);
200    }
201
202    /// Virtual destructor
203    virtual ~FormatError() throw() {}
204
205    /// Set the line number
206    void line(int line) throw() { _line = line; }
207
208    /// Set the error message
209    void message(const char *message) throw() {
210      try {
211        _message = message;
212      } catch (...) {}
213    }
214
215    /// Set the error message
216    void message(const std::string& message) throw() {
217      try {
218        _message = message;
219      } catch (...) {}
220    }
221
222    /// Set the file name
223    void file(const std::string &file) throw() {
224      try {
225        _file = file;
226      } catch (...) {}
227    }
228
229    /// \brief Returns the line number
230    ///
231    /// Returns the line number or zero if it was not specified.
232    int line() const throw() { return _line; }
233
234    /// Returns the error message
235    const std::string& message() const throw() {
236      return _message;
237    }
238
239    /// \brief Returns the filename
240    ///
241    /// Returns the filename or an empty string if it was not specified.
242    const std::string& file() const throw() {
243      return _file;
244    }
245
246    /// \brief Returns a short error message
247    ///
248    /// Returns a short error message which contains the message, the
249    /// file name and the line number.
250    virtual const char* what() const throw() {
251      try {
252        _what.clear();
253        std::ostringstream oss;
254        oss << "lemon:FormatError" << ": ";
255        oss << _message;
256        if (!_file.empty() || _line != 0) {
257          oss << " (";
258          if (!_file.empty()) oss << "in file '" << _file << "'";
259          if (!_file.empty() && _line != 0) oss << " ";
260          if (_line != 0) oss << "at line " << _line;
261          oss << ")";
262        }
263        _what = oss.str();
264      }
265      catch (...) {}
266      if (!_what.empty()) return _what.c_str();
267      else return "lemon:FormatError";
268    }
269
270  };
271
272  /// @}
273
274}
275
276#endif // LEMON_ERROR_H
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